[go: up one dir, main page]

EP3176485A1 - Raccord d'accouplement à fonction de soupape de sûreté - Google Patents

Raccord d'accouplement à fonction de soupape de sûreté Download PDF

Info

Publication number
EP3176485A1
EP3176485A1 EP14898922.1A EP14898922A EP3176485A1 EP 3176485 A1 EP3176485 A1 EP 3176485A1 EP 14898922 A EP14898922 A EP 14898922A EP 3176485 A1 EP3176485 A1 EP 3176485A1
Authority
EP
European Patent Office
Prior art keywords
coupling
fluid
engagement
pressure
sealing member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14898922.1A
Other languages
German (de)
English (en)
Other versions
EP3176485B1 (fr
EP3176485A4 (fr
Inventor
Akira Horimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sakura Rubber Co Ltd
Original Assignee
Sakura Rubber Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sakura Rubber Co Ltd filed Critical Sakura Rubber Co Ltd
Priority to PL14898922T priority Critical patent/PL3176485T3/pl
Publication of EP3176485A1 publication Critical patent/EP3176485A1/fr
Publication of EP3176485A4 publication Critical patent/EP3176485A4/fr
Application granted granted Critical
Publication of EP3176485B1 publication Critical patent/EP3176485B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet-action
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C33/00—Hose accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/06—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges
    • F16L17/067—Plastics sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/10—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part
    • F16L37/113—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part the male part having lugs on its periphery penetrating into the corresponding slots provided in the female part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet-action
    • F16L37/244—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet-action the coupling being co-axial with the pipe
    • F16L37/252—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet-action the coupling being co-axial with the pipe the male part having lugs on its periphery penetrating into the corresponding slots provided in the female part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/20—Safety or protective couplings

Definitions

  • Embodiments described herein relate generally to a coupling with a safety valve function which connects one hose to another or a hose to a device such as a pump.
  • a large-capacity foam-water discharge means is obviously required, but if a water source is located at a long distance of a several kilometers away from an oil storage tank, a means of supplying a large volume of water over such a long distance using a water supply hose is also required.
  • a water supply hose will have a significantly large loss of pressure. Therefore, to minimize the pressure loss during the transport operation, a large-diameter water supply hose and a large-diameter coupling (type 300 and type 200) are required. Further, a water supply pump and a pressure pump are installed in the middle of the water supply pathway of the water supply hose, and the water supply hose is pressurized such that the inner pressure is maintained to be at a predetermined pressure level and water is reliably supplied to a water cannon installed at the end of the water supply hose.
  • FIG. 24 shows an example of a large-capacity foam discharge system.
  • reference number 11 indicates a water source such as the sea or a lake
  • reference number 12 indicates the land.
  • Reference number 13 indicates a fire site, namely, an oil storage tank at a petroleum complex located at a distance of a several kilometers away from the water source 11.
  • a submersible pump 14 is dipped in the water source 11 and is driven by an engine generator 15 settled on the land 12.
  • a water supply pump 16 is settled on the land 12.
  • a discharge port 17 of the submersible pump 14 and an intake port 18 of the water supply pump 16 are connected to each other by a plurality of water supply hoses 19.
  • the submersible pump 14 has, for example, four discharge ports 17, and the water supply pump 16 has, for example, four intake ports 18.
  • the water supply hoses 19 which connect the discharge ports 17 and the intake ports 18, respectively, include, for example, four hoses, each having a diameter of 6 inches and a length of 10 meters, and three adjustment hoses, each having a diameter of 6 inches and a length of 3 meters.
  • the water supply pump 16 is connected to a pressure pump 20 via a water supply pathway 21, and the pressure pump 20 is installed in a part of the land 12 which is close to the oil storage tank 13 at the fire site and is far from the water supply pump 16.
  • the water supply pump 16 has a plurality of discharge ports, for example, four discharge ports 22, and similarly, the pressure pump 20 has a plurality of intake ports, for example, four intake ports 23.
  • the discharge ports 22 of the water supply pump 16 are connected to one ends of four water supply hoses 24, for example, each having a diameter of 6 inches and a length of 50 meters, and the other ends of the water supply hoses 24 are connected to the intake side of a first manifold 25.
  • the first manifold 25 has discharge ports, each having a diameter of 8 inches and connected to one ends of two water supply hoses 26, each having a length of 1000 meters.
  • the other ends of the water supply hoses 26 are connected to a second manifold 27.
  • the second manifold 27 has intake ports, each having a diameter of 6 inches and has discharge ports, respectively connected to one ends of four water supply hoses 28, each having a length of 10 meters.
  • the other ends of these water supply hoses 28 are connected to the intake ports 23 of the pressure pump 20.
  • reference number 29 indicates an undiluted solution transport vehicle loaded with a tank 30 containing foam-fire-extinguishing chemical agent (undiluted solution) to be used for extinguishing a fire set to the oil storage tank 13.
  • the tank 30 of the undiluted solution transport vehicle 29 is connected to one ends of two rubber intake pipes 31, each having a diameter of 3 inches and a length of 10 meters, and the other ends of the rubber intake pipes 31 are connected to intake ports 33 of an undiluted solution pump 32.
  • Discharge ports 34 of the undiluted solution pump 32 are connected to one ends of two canvas hoses 35, each having a diameter of 2.5 inches and a length of 10 meters.
  • the other ends of the canvas hoses 35 are connected to undiluted solution intake ports 37 of the pressure pump 20 via a mixer 36, and in the mixer 36, the foam-fire-extinguishing chemical agent (undiluted solution) is diluted with water supplied from the water source 11 at a dilution rate of, for example, 1%, and a foam-fire-extinguishing solution is produced.
  • the pressure pump 20 has a plurality of discharge ports, for example, four discharge ports 38.
  • a manifold 40 of a foam-water cannon 39 has a plurality of connection joints, for example, four connection joints (couplings) 41.
  • the discharge ports 38 of the pressure pump 20 and the connection joints (couplings) 41 of the intake side of the manifold 40 of the foam-water cannon 39 are connected to each other, for example, by four water supply hoses 42, each having a length of 20 meters.
  • the foam-water cannon 39 discharges a large volume of foam to the fire site (oil storage tank) 13 to extinguish the fire.
  • Each of the water supply hoses 24, 28, 42 or the like comprises connection joints (couplings) 43 at both ends and is detachably connected to pumps or the like via the connection joints (couplings) 43. According to the fire extinguishing situation, it is possible to increase or decrease the number of the water supply hoses 24, 28 and 42.
  • the connection joints (couplings) 43 are provided via valves 44.
  • an operator of the foam-water cannon 39 reports the situation to a supervisor, and the supervisor contacts an operator who is monitoring the pressure pump 20 by radio or the like and instructs the operator to decrease the rotation speed of the pump and then stop the operation of the pump, and also instruct the operator to stop the water supply pump 16 and the submersible pump 14 and then close the four valves 44 connected to the four hoses including the water supply hose 42 where the water leakage has occurred.
  • the operator immediately instructs an operator who is monitoring the water supply pump 16 to decrease the rotation speed of the pump and then stop the operation of the pump, and instructs an operator who is monitoring the submersible pump 14 to decrease the rotation speed of the pump and then stop the operation of the pump after the supply pump 16 has stopped.
  • the operator who is monitoring the pressure pump 20 closes the four valves 44 connected to the four hoses including the water supply hose 42 where the water leakage has occurred after the operations of the water supply pump 16 and the submersible pump 14 are completely stopped.
  • a fluid pressure surge namely, a water hammer is created by dynamic pressure which is different from rated pressure (static pressure) of the water supply pump 16 and the like and is applied to the water supply hoses 28, 26, 24, and the like. Therefore, it may burst the water supply hoses 28, 26, 24, and the like or break the couplings 43 attached to these hoses.
  • the pressure resistance level of the water supply hoses 24, 26, 28, 42 and the like is designed to some extent.
  • such water supply hoses 24, 26, 28 and 42 having high pressure resistance level will be expensive and will be difficult to maneuver as the water supply hoses themselves become heavier and harder.
  • a water supply line is composed of a several tens of hoses. Then, a safety valve is attached to a nearest manifold to a high-pressure fluid pump or the like. However, if a valve of a discharge port, an intake port, or the like is abruptly closed, a water hammer is created, and the pressure of the valve on the water source side increases to such a pressure level about 2 to 3 times the normal pressure level of the water transport operation.
  • a water hammer tends to be created on the water supply line by lack of cooperation between these pumps.
  • a large number of valves are provided in various locations on the water supply line. Therefore, a water hammer may be created everywhere on the water supply line.
  • a coupling with a safety mechanism has been proposed ( JP 4834423 B ).
  • the coupling with the safety mechanism (connection joint) 50 is shown in FIG. 25 .
  • a safety valve pressure valve
  • a branch pipe 52 is provided in the middle of a cylindrical coupling body 51 of the coupling 50, and a safety valve 80, which will be described later, is attached to the branch pipe 52. Therefore, the branch pipe 52 and the safety valve 80 are arranged perpendicularly with respect to the axis of the coupling body 51, and the coupling 50 has a T shape as a whole.
  • coupling portions 57a and 57b which have the same structure as each other, are assembled into the ends of the coupling body 51, respectively.
  • Each of the coupling portions 57a and 57b comprises a cylinder body 58.
  • the cylinder body 58 has a cylindrical shape, and at the outer edge of the cylinder body 58, a sealing member 59 such as a rubber packing is attached.
  • the coupling portions 57a and 57b are axially coupled with those of the other coupling 50, which have the same structure as the one coupling 50, and at this time, the sealing members 59 at the outer edges of the cylinder bodies 58 are attached to those of the other couplings 50, and fluid passages 78 in the cylinder bodies 58 are, as maintained to be sealed from the outside, communicated with those of the other couplings 50.
  • a coupling ring 61 is attached to the cylinder body 58, and at the outer edge of the coupling ring 61, a plurality of engagement projections, for example, nine engagement projections 70 are provided.
  • These engagement projections 70 are circumferentially arranged at regular intervals and axially project outward with respect to the sealing member 59.
  • the regions between the engagement projections 70 are engagement recesses 71.
  • the engagement projections 70 of the coupling portion 57a of the one coupling 50 are fitted into the engagement recesses 71 of the coupling portion 57b of the other coupling 50, and the engagement projections 70 of the coupling portion 57b of the other coupling 50 are fitted in the engagement recesses 71 of the coupling portion 57a of the one coupling 50. That is, the coupling is a unisex coupling and is complementarily engaged with the other coupling.
  • a step-like hook namely, an engagement hook 72 is formed in one side surface 70a of each engagement projection 70, and the engagement hooks 72 of the one engagement projections 70 are circumferentially engaged with the engagement hooks 72 of the engagement projections 70 of the other coupling 50.
  • a biasing mechanism 73 is provided in the other side surface of the engagement projection 70, which is opposite to the side surface of the engagement projection 70 provided with the engagement hook 72.
  • the biasing mechanism 73 comprises a steel ball 74 and a spring (not shown) which pushes the steel ball 74 in the projecting direction. Therefore, when the engagement projections 70 are engaged with the engagement recesses 71, the steel balls 74 of the one engagement projections 70 are pressed against the steel balls 74 of the other engagement projections 70, and the other side surfaces of the engagement projections 70, that is, the side surfaces of the engagement projections 70 provided with the steel balls 74 are separated from each other. As a result, the side surfaces of the engagement projections 70, that is, the side surfaces provided with the engagement hooks 72 are brought closer to each other, and thus the engagement hooks 72 are engaged with each other.
  • the safety valve (pressure valve) 80 is provided at the end of the branch pipe 52 as a safety valve mechanism which discharges an internal fluid to the outside when the inner pressure of the branch pipe 52 exceeds a set pressure level.
  • a valve body 81 of the safety valve 80 is detachably attached to the end of the branch pipe 52.
  • an inward-projecting valve seat element 84 and a valve body 86 are provided in the valve body 81.
  • the valve body 86 opens such that the fluid passage 78 becomes open to the outside.
  • An upward-projecting valve rod 87 is provided in the valve element 86.
  • the valve rod 87 penetrates through a through-hole 90 of an adjustment screw member 89 screwed into a female screw portion 88 formed at the top of the valve body 81.
  • the valve rod 87 is supported in an axially movable manner with respect to the adjustment screw member 89.
  • a coil spring 91 is wound around the valve rod 87 and is interposed between the lower surface of the adjustment screw member 89 and the upper surface of the valve element 86 in a compressed manner. It is possible to adjust the pressing force of the coil spring 91 by rotating the adjustment screw member 89 and determining the vertical movement position of the adjustment screw member 89. In this way, it is possible to adjust a setting pressure at which the valve element 86 opens.
  • a relief hole 92 which leads to the outside is provided in the circumferential wall of the valve body 81, and the fluid passage 78 is communicated with the outside through the relief hole 92.
  • the valve body 86 is pushed up against the pressing force of the coil spring 91, and as the valve body 86 is separated from the valve seat 84, a part of the foam fire-extinguishing solution or the like in a fluid passage 85 is discharged to the outside through the relief hole 92, and the pressure of the solution in the fluid passage 78 is reduced. Therefore, it is possible to prevent such a situation where fluid pressure higher than the setting pressure is applied to other fire hoses, couplings, and the like.
  • the coupling body and the safety valve arranged in a substantially T shape, and the safety valve is attached to the coupling body as a separate voluminous mechanism. Therefore, as a whole, the coupling increases in size and volume. Further, since the coupling has a T-shaped outer shape, a direction for the installation of the top and the bottom of the coupling is specified. Therefore, the coupling with the safety mechanism cannot be easily installed in various locations on the water supply line. Further, since the safety valve is attached to the coupling body as a separate mechanism, the structure of the coupling becomes complicated, and consequently the manufacturing cost increases.
  • the coupling 50 is formed in a compact design, and a safety valve (mechanism) 80 is incorporated in a coupling body 51.
  • a safety valve (mechanism) 80 is incorporated in a coupling body 51.
  • elements the same as those described above with reference to FIG. 25 will be denoted by the same reference numbers, and detailed description thereof will be omitted.
  • a valve rod 93 is arranged inside the coupling body 51 on the center axis of the coupling body 51.
  • the valve rod 93 penetrates through an adjustment screw member 95 which is screwed into a screw portion 94 formed in the inner wall of the coupling body 51. Further, the valve rod 93 is supported to the adjustment screw member 95 in an axially movable manner.
  • an axially-penetrating fluid passage 78 is formed on the inner side of the valve rod 93.
  • a valve body 86 whose diameter is greater than the diameter of the other portion of the valve rod 93 is integrally formed or firmly secured as a separate member.
  • the valve body 86 is in contact with a sealing surface 54 formed on the inner surface of the coupling body 51 and is fitted inside in an axially movable manner with respect to the coupling body 51.
  • a sealing O-ring 55 which is in sliding contact with the sealing member 54 is attached to the outer periphery of the valve body 86. Therefore, the valve body 86 can, while maintaining the sealed state, axially move with respect to the coupling body 51.
  • the valve rod 93 is wound with a coil spring 91, and the coil spring 91 is interposed between the valve body 86 and the adjustment screw member 95. Further, the coil spring 91 axially pushes the valve body 86 outward. Still further, the pressing force of the coil spring 91 can be adjusted by the adjustment screw member 95.
  • a key groove 97 is formed in the outer periphery of the valve body 86, and a key 98 provided in a coupling ring 61 is fitted in the key groove 97. Since the width of the key groove 97 in the axial direction is greater than the width (thickness) of the key 98 in the axial direction, the valve body 86 can axially move together with the valve rod 93 by this width difference.
  • a sealing member 59 which is similar to the above-described sealing member is provided in the circumference of the end face at the outer axial end of the valve body 86, and the sealing member 59 axially moves together with the valve body 86. Still further, when one coupling 50 is coupled with the other coupling 50, the sealing member 59 of the one coupling 50 contacts the sealing member 59 of the other coupling 50, and the seals between the couplings 50.
  • one sealing member 59 functions as the valve body of the safety valve 80, while the other sealing member 59 functions as the valve seat of the safety valve 80. Therefore, the sealing member 59 of one coupling 50 functions as the valve seat when the sealing member 59 of the other coupling 50 is assumed to be the valve body, while the sealing member 59 of one coupling 50 functions as the valve body when the sealing member 59 of the other coupling 50 is assumed to be the valve seat. Consequently, the sealing members 59 of the pair of the coupling 50 complementarily function as the valve body and the valve seat of the safety valve 80.
  • sealing member 59 is assumed to be a lip seal packing in the present example, the sealing member 59 may be a packing other than a lip seal packing, for example, a ring packing having a circular, rectangular or trapezoidal section or a flat packing.
  • the valve body of the other coupling 50 instead of using the sealing member 59 of a lip seal packing or a packing having a circular, rectangular or trapezoidal section, the flat end face of the valve body can be directly used as the valve seat.
  • the coupling 50 with the pressure valve is not T-shape and is more compactly-designed since the coupling 50 and the pressure valve are linearly arranged. Further, in the installation of the coupling 50 with the pressure valve, there will be fewer restrictions on the installation direction.
  • the fluid passage 78 is formed in the valve rod 93 arranged in the coupling 50, the fluid passage 78 becomes narrow, and consequently the coupling 50 has a rather low fluid transport performance and has a rather great pressure loss in the fluid transport operation with respect to the outer diameter of the coupling 50.
  • the diameter of the coupling 50 should preferably correspond to the diameter of a hose or a pipe to be connected to the coupling 50, but if the coupling body has a diameter corresponding to the diameter of the hose or the pipe, the diameter of the fluid passage 78 formed in the valve rod 93 is significantly restricted.
  • the coupling body should preferably have such a structure where the diameter of the fluid passage 78 is substantially the same as the inner diameter of the hose or the pipe.
  • a coupling 50 with a built-in safety valve shown in FIG. 27 a coupling 50 with a built-in safety valve shown in FIG. 27 .
  • a coil spring 91 is not arranged inside a coupling body 51 but is arranged in such a manner as to be wound around the outer periphery of the coupling body 51, and a wide fluid passage 78 is secured in the coupling body 51. Further, the coil spring 91 is arranged in the room between the outer periphery of the coupling body 51 and the inner periphery of a coupling ring 61.
  • the rear end of the coil spring 91 pushes a spring receiving member 99a which is screwed into the rear end of the coupling ring 61, and the front end of the coil spring 91 pushes a stopper wall 99b which stands in the outer periphery of the axial front end of the coupling body 51.
  • engagement projections 70 and engagement recesses 71 which are similar to those shown in FIGS. 25 and 26 are formed at the axial front end of the coupling ring 61.
  • An axial front end portion 61a of the coupling ring 61 projects inward, and this end portion 61a abuts against the front wall surface of the stopper wall 99b from the front side.
  • the coupling body 51 is axially pushed forward by the coil spring 91, and thus the coupling body 51 is generally is in contact with the axial front end portion 61a of the coupling ring 61 and remains advanced.
  • the coupling ring 61 is only provided at one axial end of the coupling body 51, and the other axial end of the coupling body 51 serves as a mounting portion 51a to which a hose or the like is mounted.
  • a sealing member 59 is arranged in a ring region at the end of the coupling body 51. Still further, since the ring region of the coupling body 51 which functions as a valve body and a portion of the sealing member 59 which function as a valve unit have large diameters, the fluid passage 78 will have a large diameter, and a large volume of fluid can be transported trough the fluid passage 78. Still further, since the wide fluid passage 78 can be secured, the pressure loss can be reduced.
  • the coupling 50 is equipped with a pressure valve driving mechanism, the structure of the coupling 50 becomes complicated, and the manufacturing cost increases, accordingly.
  • the structure of the linear coupling 50 is simpler and more compact.
  • this coupling 50 is still not light, simple or compact enough to substitute for a conventional coupling, and the manufacturing cost of this coupling 50 is still high.
  • a coupling with a safety valve function which connects tubes such as hoses or pipes to each other or connects the tube to another device
  • the coupling comprises: a coupling body including a mounting portion which is formed at one axial end of the coupling body and on which the tube or the other device is mounted, and a fluid passage which is formed inside the coupling body; a coupling part including an attachment portion which is formed at one axial end of the coupling part and is attached to the coupling body, and a coupling portion which is formed at the other axial end of the coupling part and is coupled with a counterpart coupling; a sealing member which is provided at the other axial end of the coupling body and closes a gap with a sealing member of a counterpart coupling between the coupling and the counterpart coupling; and a deformation portion which is formed in the coupling part, which maintains a coupling condition with the counterpart coupling until a leak path is formed between the sealing member and the sealing member of the counterpart coupling when the deformation portion is axially stretched
  • the coupling with the safety valve function of claim 1 further comprises: a warning means to warn an unusual condition by ejecting the fluid from a fluid ejection port which is formed in the coupling part and ejects the fluid to the outside through the leak path which is formed between the sealing member and the sealing member of the counterpart coupling when pressure of the fluid within the coupling body unusually increases and the sealing member is separated from the sealing member of the counterpart coupling.
  • the coupling part includes a cylindrical portion circumferentially arranged in the coupling body, the cylindrical portion including a long hole which is cut out in the cylindrical portion and is oblique to the axis of the coupling part, and a region configured to function the deformation portion where the long hole is formed.
  • the coupling part includes a cylindrical portion circumferentially arranged in the coupling body, and the deformation portion is configured to be formed in a thickness which is less than a thickness of the other portion of the coupling part. That is, the deformation portion has an axial sectional area less than an axial sectional area of the other portion of the cylindrical portion in the coupling part or the coupling body.
  • the coupling portion includes: a projection which axially projects in a direction of the axis of the coupling body toward the counterpart coupling; and an engagement hook which is provided in the projection and is engaged with an engagement hook of a coupling portion of the counterpart coupling, and the deformation portion is formed in the coupling portion.
  • an opening of the leak path which is formed between the sealing member and the sealing member of the counterpart coupling when the deformation portion is stretched and the sealing member is axially separated from the sealing member of the counterpart coupling, at least partly overlaps the fluid ejection port, and the fluid discharging from the leak path ejects to the outside thorough the fluid ejection port.
  • the coupling part has a plurality of the fluid ejection ports which are arranged along the circumferential direction.
  • the coupling part has three or more of the fluid ejection ports which are arranged at regular intervals along the circumferential direction.
  • At least one of the coupling part, the coupling portion and the deformation portion is formed of a material having an elongation rate of 10% or more.
  • At least one of the coupling part, the coupling portion and the deformation portion is formed of a forged aluminum alloy having a tensile strength of 250 N/mm 2 or more and an elongation rate of 15% or more.
  • the engagement hook includes an engagement surface which is engaged with an engagement surface of the counterpart coupling, and the engagement surface is inclined in an overhanging manner at a counter-angle ⁇ of 20° to 30° with respect to a circumferential direction of the coupling.
  • Present inventions aim, when a coupling, a hose and the like are subjected to unusually high pressure for some reason or other during the operation, to maintain the coupling condition with the counterpart coupling, appropriately open a leak path in a sealing portion of the coupling and decrease the pressure, and enhance the safety of the coupling itself as well as the whole system.
  • Present inventions described herein also provide a coupling which can warn the operator or the like of an abnormality by ejecting the fluid out from the leak path.
  • present inventions also aim to provide a coupling reduced in weight and size as much as possible and having the simplest structure possible at much the same cost as that of a conventional coupling and to substitute the present coupling with the safety valve function for the conventional coupling.
  • the safety is placed at the highest priority, and thus once the safety valve is operated under abnormally high pressure, the safety valve are not necessarily reset to the original state.
  • the fluid flowing through the coupling according to each claims of the present invention is mainly assumed to be fluid such as water or sea water, and that the coupling according to present invention is assumed to be applied to all the couplings or the main couplings used in one pumping system composed of hoses or the like. Further, in a case where a coupling is used in a large-capacity foam-water discharge system, at least ten pairs of the present couplings (ten pairs of the couplings in a case where two lines of four hoses are arranged in parallel) may be used.
  • the leak path is opened in the sealing portion of the coupling and the pressure is reduced, and in this way, the safety of the coupling is enhanced.
  • the coupling including the fluid ejection ports provided on the coupling body which eject the fluid discharged from the leak path formed between the sealing members which are separated from each other when the pressure of the fluid unusually increases, it is possible to warn the operator of the abnormality which is revealed by ejecting the fluid, which is discharged from the leak path, from the fluid ejection ports.
  • FIGS. 1 to 6 illustrate the first embodiment.
  • FIG. 1 is a side view of a pair of couplings used as connection joints for a hose, a pipe or the like in the above-described large-capacity foam-water discharge system
  • FIG. 2 is an explanatory drawing showing coupling condition where the pair of couplings is coupled together.
  • each coupling 100 has an axially-inverted identical structure, and coupling portions 110, which will be described later, have an identical unisex structure.
  • each coupling 100 comprises a coupling body 101 formed of a substantially cylindrical tubular member.
  • a metal material such as an aluminum alloy or a titanium alloy is forged, drawn, or extruded into a general shape, and the metal material is then subjected to a cutting process or the like, and finally the coupling body 101 is integrally formed.
  • an ordinary casting product such as a casting has low elongation and poor toughness and is unsuitable for the material of the coupling body 101, and thus in the present embodiment, an ordinary casting product such as a casting is not used for the coupling body 101.
  • the coupling body 101 has a fluid passage 102 which extends along a center axis O of the coupling body 101 in the inner space of the tubular portion of the coupling body 101.
  • the outer periphery of one axial end of the coupling body 101 (an end located on the rear side when the coupling portion 110 side is assumed to be the front side) has recesses and projections, and this portion functions as a attaching portion 103 to which a hose or the like is fitted.
  • a hose or the like overlaps on the attaching portion 103 and is firmly secured by means of a binder (not shown) or the like.
  • a substantially-cylindrical coupling part 105 is attached to the other end of the coupling body 101, that is, the outer periphery of the forward end of the coupling body 101 which is opposed to the coupling portion of the counterpart coupling.
  • the coupling part 105 is formed of a metal material such as an aluminum alloy and is integrally formed.
  • the coupling part 105 including the coupling portion 110 which will be described later, is integrally formed of a metal material such as an aluminum alloy or a titanium alloy is forged, drawn, or extruded into a general shape and is then subjected to a cutting process or the like.
  • an ordinary casting product such as a casting has low elongation and poor toughness and is often unsuitable for the material, as in the case of the coupling body 101, an ordinary casting product such as a casting is not used for the coupling part 105.
  • the materials of the coupling body 101 and the coupling part 105 in particular, the material of the coupling part 105 should preferably have an elongation rate of 10% or more.
  • the coupling body 101 and the coupling portion 105 are formed of A5056TE of the JIS H 4140-1988: "aluminum or aluminum alloy forgings" and have a tensile strength of 321 N/mm 2 and an elongation rate of 22% as measurement values.
  • a rear end portion located on the back side of the coupling part 105 functions as an attachment portion to be attached to the coupling body 101.
  • a female screw portion 106 is formed in the inner periphery of the rear end portion.
  • a male screw portion 107 is formed in the middle of the outer periphery of the coupling body 101.
  • the female screw portion 106 is formed on the inner surface of a projected edge portion 108 which slightly projects inward with respect to the other portion of the coupling part 105. Further, as the projected edge portion 108 projects inward, a part of the outer periphery of the coupling body 101 in the position corresponding to the projected edge portion 108 has a smaller diameter, and a step portion 109 is created in the outer periphery of the coupling body 101. Still further, the male screw portion 107 is formed on the bottom surface of the step portion 109. Therefore, as shown in FIG.
  • the projected edge portion 108 of the coupling part 105 abuts into the standing wall of the step portion 109 of the coupling body 101 in an attachment position where the female screw portion 106 of the coupling part 105 is outwardly engaged with the male screw portion 107 of the coupling body 101, and in this way, the axial position of the coupling part 105 with respect to the coupling body 101 is determined, and the forward movement of the coupling part 105 is limited at the same time.
  • the coupling part 105 may also be attached to the coupling body 101 in such a manner where the coupling part 105 rotates around the axis of the coupling body 101.
  • the terms such as "the coupling body”, which includes characters meaning "metal parts” in Japanese do not necessarily means that the corresponding members are formed of metal materials.
  • the term: "coupling" is used in the sense of function, and the coupling also includes a material other than a metal material, for example, a compound material such as a fiber-reinforced resin and the like as long as the material is considered to be suitable in light of the material characteristics such as strength.
  • the coupling portions 110 are formed at the front ends of the pair of the coupling parts 105.
  • the coupling portions 110 have the same unisex structure and are thus complementary to each other.
  • the coupling portions 110 are integrally formed with the coupling parts 105, respectively.
  • the coupling part 105 and the coupling portion 110 are integrally formed with each other, but the coupling part 105 and the coupling portion 110 may be formed as separate members and may be connected to each other.
  • the coupling portion 110 circumferentially projects a plurality of integrally-formed engagement projections, for example, twelve engagement projections 111 at regular intervals, and engagement recesses 112 are formed between the engagement projections 111. That is, a pair of the engagement projection 111 and the engagement recess 112 is provided within a range of 30° of the circumference, and twelve pairs of these are circumferentially provided.
  • the engagement projections 111 of the one coupling part 105 are fitted into the engagement recesses 112 of the coupling part 105 of the counterpart, and the engagement projections 111 of the coupling part 105 of the counterpart are fitted into the engagement recesses 112 of the coupling part 105 and thus one coupling 100 is complementary to the other coupling 100.
  • the width of the engagement recess 112 in the circumferential direction is slightly greater than the width of the corresponding engagement projection 111 in the circumferential direction. Therefore, the engagement projection 111 is circumferentially rotatable by a predetermined amount (G2) as shown in FIG. 2 within the engagement recess 112.
  • a side surface 111a located on one of the circumferentially-arranged sides of the engagement projection 111 is substantially parallel to the axial direction of the coupling part 105, while a side surface 111b located on the other of the circumferentially-arranged side of the engagement projection 111 is inclined with respect to the axial direction of the coupling part 105 such that the engagement projection 111 is tapered down toward the leading end.
  • one side surface is inclined such that the width of the engagement projection 111 in the circumferential direction tapers down toward the leading end of the engagement projection 111.
  • the width of the engagement recess 112 in the circumferential direction tapers down toward the innermost portion of the engagement recess 112, accordingly.
  • the gap G2 is formed between the back surface of the engagement projection 111 and the back surface of the engagement recess 112. Therefore, it is possible to secure a sufficient distance between an engagement position where the engagement hooks 113, which will be described later, are engaged with each other and a retreat position where the engagement hooks 113 are disengaged from each other. Further, the engagement projection 111 and the engagement recess 112 are axially moved further from a position where the engagement hooks 113 are engaged with each other, and also the engagement projection 111 and the engagement recess 112 are axially rotatable. In this way, the engagement hooks 113 can be engaged with or disengaged from each other.
  • the engagement hooks 113 are formed as a step-like hook in the one side surfaces 111a, which are substantially parallel to the axial direction of the coupling part 105, of the respective engagement projections 111.
  • These engagement hooks 113 will be coupled or uncoupled the pair of couplings by fitting the engagement projections 111 fitted into the innermost of the engagement recesses 112 of the counterpart and then circumferentially rotating the coupling parts 105 each other. That is, as a pair of engagement hooks 113 is getting closer with each other, the engagement hooks 113 are circumferentially engaged with each other and are hooked over each other as shown in FIG. 2 . Then, the coupling portions 110 are coupled with each other such that the coupling portions 110 will not be axially separated or detached from each other.
  • an engagement surface 113a of the engagement hook 113 is inclined at a predetermined angle in an overhanging manner with respect to the circumferential direction of the coupling part 105, and since the engagement surface 113a is inclined in this manner, engagement strength of a pair of the engagement hooks 113 in an engaged state is enhanced.
  • an axial load of water pressure or the like to be transported is applied to the coupling bodies 101 of the pair of the couplings 100 in separating direction of the couplings 100 each other.
  • the axial tensile load is transferred from the coupling bodies 101 to the coupling parts 105 and further to the engagement hooks 113 which are engaged with each other. Since the engagement surfaces 113a are inclined at a predetermined angle in an overhanging manner, a circumferential rotation force which makes the engagement hooks 113 deeply engage, is generated. With this rotation force, the engagement hooks 113 are further firmly engaged with each other, and the pair of the coupling parts 105 is prevented from being uncoupled or detached from each other.
  • a round notch (curved portion) 115 is formed in the proximal portion of each engagement hook 113 to prevent the proximal portion from concentrating a stress, and an opening of the notch 115 serves as a fluid ejection port 116 having a fluid ejection function, which will be described later.
  • the leading edge of the engagement projection 111 has arc-like corners, and the arc-like portions serve as guide portions 117 which guide the engagement project 111 into the engagement recess 112.
  • the bottom portion of the engagement recess 112 has arc-like round portions 118.
  • a pushing mechanism 120 which will be described later, is assembled in a position corresponding to the other inclined side surface 111b of the engagement projection 111.
  • the pushing mechanism 120 comprises, as shown in FIG. 2 , a pushing member, for example, a steel ball 125, accommodated in a cylindrical case member 124a in a freely projectable and retractable manner and a spring 126 which applies a pressing force to the steel ball 125 in the projecting direction, and the pushing mechanism 120 constitutes the so-called ball plunger.
  • the steel ball 125 is partly projected from the side surface 111b. Therefore, as shown in FIG.
  • the engagement projections 111 are pushed in directions where the side surfaces 111a of the engagement projections 111 are brought closer to each other, and this pressing force maintains the engagement hooks 113 to be engaged with each other as shown in FIG. 3b .
  • the pushing mechanism 120 pushes one engagement projection 111 away from the other engagement projection 111, in the engagement of the pair of the couplings 100, the pushing mechanism 120 leads one engagement hook 113 to be engaged with the other engagement hook 113. Then, the pressing force of the pushing mechanism 120 maintains the engagement hooks 113 to be engaged with each other, after the engagement hooks 113 are engaged with each other.
  • the contact face 133c of the lip-like tip portion 133b is inclined such that the inner part of the contact face 133c in the radial direction projects forward with respect to the outer part of the contact face 133c ( FIG. 6D shows a free state). Since the contact face 133c is inclined such that the contact face 133c gradually projects forward toward the innermost part of the contact face 133c in a free state where the pair of the couplings 100 has not coupled together yet, when the pair of the couplings 100 shown in FIG. 6A is coupled together, only the ends of the coupling faces 133c contact each other and the leading edges (the innermost parts in the radial direction) are most strongly pressed against each other. When the lip-like tip portions 133b are in a state shown in FIG. 6A , the pair of the couplings 100 is coupled together, before the fluid transports.
  • the lip-like tip portions 133b are pressed by the internal fluid pressure (for example, 1.3 MPa), the lip-like tip portions 133b are pushed to the outside and are elastically deformed as shown in FIG. 6B , and as the entire contact faces 133c are tightly in contact with each other, the sealing effect is enhanced.
  • the lip-like tip portions 113b are a closed state, the contact faces 133c near the leading edges (the innermost parts in the radial direction) of the lip-like edge portions 133b are in contact with each other under the strongest contact pressure, and thus the fluid will not leak from between the lip-like tip portions 133b to the outside.
  • the fitting groove 132 has a projection 132d which projects toward the center of the opening of the fitting groove 132 and is formed in the circumference of the opening edge of the fitting groove 132.
  • the projection portion 132d prevents the base portion 133a of the sealing member 133 from coming off the fitting groove 132.
  • the projection portion 132d may be formed at a part of the circumference of the opening edge of the fitting groove 132 or may be formed at the entire circumference of the opening edge of the fitting groove 132.
  • the sealing members 133 of the pair of the couplings 100 are in such a relationship where the sealing member 133 of one coupling 100 will be a valve seat when the sealing member 133 of the counterpart coupling 100 is assumed to be a valve body and will be a valve body when the sealing member 133 of the counterpart coupling 100 is assumed to be a valve seat. That is, when serving as the valve body and the valve seat of the safety valve, the sealing members 133 of the pair of the couplings 100 are complementary to each other.
  • the sealing members 133 have the same shape as each other, and a safety valve 134 has a valve structure such as the sealing members 133 abut each other.
  • seal ring portion 131 and the sealing member 133 may be unified and may be in such a relationship where each of the seal ring portion 131 and the sealing member 133 serves as a valve body or a valve seat.
  • the sealing members 133 are also the sealing portion when the pair of the couplings 100 is coupled together.
  • the sealing members 133 are separated from each other, and the leak path 138 is created therebetween.
  • the fluid ejection ports 116 formed by the notches 115 of the engagement hooks 113 are located. That is, a part of the region of the leak path 138 overlaps a part of the region of the fluid ejection ports 116. Therefore, the high-pressure fluid discharged from the leak path 138 is swiftly discharged from the leak path 138 to the outside via the fluid ejection ports 116 linearly. Consequently, the fluid linearly discharged to the outside through the fluid ejection ports 116 is ejected to the outside of the couplings without being subjected to unnecessary resistance on the way.
  • the sealing members 133 as the valve bodies retreat to be separated from each other, and the leak path 138 is created between the sealing members 133. Still further, at least a part of the fluid ejection portion 142 overlaps the region of the leak path 138. Further, the position of a part of the region of the leak path 138 also corresponds to the position (here, the region of the gap G2 around where the steel balls 125 of the pushing mechanisms 120 are installed) between the side surfaces of the engagement projections 111 opposite to the side of the engagement projections 111 provided with the engagement hooks 113. Therefore, the region of the gap G2 is also regarded as the fluid ejection port 142.
  • the engagement projection 111 is tapered off and has a broader width toward the base end, that is, toward the coupling part 105 side, it is possible to prevent concentration of a stress on the base end portion of the coupling portion 110. Still further, as the length of the engagement projection 111 extends, the leading end area of the engagement projection 111 for supporting the engagement hook 113 increases, and the strength of the engagement hook 113 with respect to the tensile load increases, accordingly. Still further, even in the case of using a material of the same elongation, it is possible to increase the lift amount of the sealing member 133 by increasing the area from the base portion of the engagement projection 111 to the engagement portion of the engagement hook 113. Hence, the leak path as the safety valve function can be secured for releasing a sufficient amount of discharge.
  • the deformation portion 140 (the coupling portion 110) is plastically elongated axially on the whole while being slightly bent. Then, as the seal ring portions 131 of the pair of the couplings 100 are lifted and separated from each other, the contact faces of the sealing members 133 are separated from each other, and the leak path 138 is created between the sealing members 133. The high-pressure fluid within the fluid passage 102 is discharged to the outside through the leak path 138.
  • test specimen The material and the property of the test specimen are as follows. First, the material is assumed to be A5083FH which is defined in the JIS H 4140-1988: "aluminum and aluminum alloy forgings". As compared to generally-used forged products, this material is more expensive and more intractable but is excellent in toughness (strong and not easily breakable).
  • JIS standard values Average measurement values
  • a water hammer or an energy accumulation state where a hose expands in a radial direction or in a longitudinal direction and energy is accumulated (note that, in the case of a steel pipe, unlike a hose, a steel pipe hardly expands or energy is hardly accumulated), there are a testing method of accumulating energy by using a giant pump whose pumping capacity is significantly greater than those of the pumps of these two kinds or a testing method of accumulating energy by using an accumulator or the like, but these methods are too dangerous. Therefore, these pressure test methods are not adopted.
  • a universal material testing machine RU500H-TK21 (500 kN) made by Tokyo Koki Manufacturing Co., LTD. settled at Industrial Technology Center of Tochigi Prefecture is used. Further, a load addition rate is 0.5 mm/min, a load range is 500 kN, and a displacement range is 100 mm.
  • the displacement amount indicates a displacement amount between the chucks of the tensile testing machine. Therefore, the displacement amount is the total displacement amount of the whole of the test specimens and also includes such a displacement amount which does not contributes to the axial lift effect of the seal ring portions 131 (sealing members 133) such as an amount of displacement of the supporting plate (solid plate) 161 associated with bowl-like deformation. In this way, it is possible to macroscopically understand the load/displacement characteristics of the whole test specimen.
  • engagement hook 113 is provided on one side of the engagement projection 111 (the coupling portion 110), and the engagement face 113a of the engagement hook 113 is axially engaged with that of the counterpart coupling. Now, the angle (counter-angle) ⁇ of this engagement face will be considered.
  • the whole engagement projection 111 When applied to a load greater than the test pressure of the coupling, the whole engagement projection 111 (the whole coupling portion 110) is, while being bent in a direction opposite to the engagement hook 113 direction, axially stretched. Note that, since the bending deformation under the working pressure or the test pressure falls within the range of slight elastic deformation, the bending deformation springs back to the original shape when the load is released. In the test, a load was increased up to such a level about 4.6 times the working pressure, and a counter-angle ⁇ was measured under each load, and in this way, a change in the counter-angle ⁇ was examined.
  • the counter-angle ⁇ of the coupling for the large-capacity foam-discharge system (150 to 400 mm nominal coupling) is set to 25°, although the counter-angle ⁇ varies depending on the material, the size, the shape or the like of the coupling.
  • tolerable pressure where the coupling can be used without being broken was about 440 kN (about 4.6 times the working pressure), and under this pressure, the remaining counter-angle ⁇ was substantially zero degree, and thus the counter-angle of the basic design, namely, the counter-angle of about 25° was the minimum angle and the optimal value. Further, if the counter-angle ⁇ is shallow than that angle, the counter-angle ⁇ will be deformed in the opposite direction under abnormally high pressure, and the axial load, which has been applied to the coupling, will generate a rotation force in a direction of uncoupling the couplings.
  • the engagement hook 113 is provided in the engagement projection 111 of the coupling portion, and the engagement face 113a of one coupling portion is engaged with the engagement face 113a of the counterpart coupling portion, and thus the engagement faces 113a are inclined in an overhanging manner with respect to the circumferential direction of the couplings.
  • the present invention is not necessarily limited to the above-described embodiment, and for example, as shown in FIG. 22 , the end of the engagement hook 113 may be axially extended backward and formed in an overhanging manner, that is, a hook portion which is curved inward from the counterpart coupling side may be formed and may be hung over a hook portion of the counterpart coupling.
  • the engagement hook 113 shown in FIG. 22 comprises a hook portion 114 which axially projects backward, but the rest of the structural elements are the same as those of the above-described embodiments.
  • the reference numbers shown in FIG. 22 are the same as those of the structural elements of the above-described embodiments, and thus the structural elements are denoted by the same reference numbers and the detailed description thereof will be omitted.
  • FIG. 23 illustrates the sixth embodiment.
  • FIG. 23 is a side view partly in section of the pair of couplings coupled together.
  • a coupling comprises a screw-type coupling portion.
  • This screw-type coupling comprises a male coupling body 171 and a female coupling body 172, and these coupling bodies 171 and 172 are formed of cylindrical bodies of substantially the same diameter.
  • a male screw portion 173 is formed in the outer periphery of end of the male coupling body 171 which is opposed to the female coupling body 172.
  • the end of the male coupling body 171 provided with the male screw portion 173 is extended, and this extension end serves as a seal projection end 176 which projects into a ring-like elastic sealing member 174 provided in the female coupling body 172.
  • a circumference groove 175 is formed in the outer periphery of the front end of the female coupling body 172, and the inner periphery of the elastic sealing member 174 is fitted in the circumference groove 175. Then, the seal abutting end 176 of the male coupling body 171 abuts into the protruding part of the elastic sealing member 174 which protrudes from the circumference groove 175 (see FIG. 23 ).
  • the coupling part 180 has a substantially cylindrical shape, and one end of the coupling part 180 is rotatably attached to the end of the female coupling body 172. Further, a female screw portion 181 is formed in the inner periphery of the other end of the coupling part 180. Then, the female screw portion 181 is engaged with the male screw portion 173 of the female coupling body 171, and the male coupling body 171 is coupled with the female coupling body 172. Further, the coupling part 180 also functions as a coupling portion 183 which couples the male coupling body 171 with the female coupling body 172.
  • the coupling part 180 is fitted in from the back side of the female coupling body 172 until the projection edge 189 for stopper abuts against the stopper projection 188, and the male coupling body 171 is coupled with the female coupling body 172 (see FIG. 23 ).
  • This position defines the axial position of the coupling part 180, and the coupling part 180 is rotatable with respect to the female coupling body 172.
  • the seal abutting end 176 of the male coupling body 171 abuts into the elastic sealing member 174, and in this way, a gap between the coupling bodies 171 and 172 is closed when the coupling bodies 171 and 172 are coupled with each other.
  • the region where the long holes 191 are provided corresponds to a position where the sealing member 174 of the female coupling body 172 and the seal projection end 176 of the male coupling body 171 are abutting each other. Still further, when at least the seal abutting end 176 is separated from the sealing member 174, the leak path created in the gap between the sealing abutting end 176 and the sealing member 174 is located in the region of the long holes 191. Therefore, when the pressure of the fluid within the fluid passages 186 and 187 unusually increases, the deformation portion 190 of the coupling part 180 is plastically deformed and axial elongated, and the leak path is created.
  • the region of the leak path overlaps the region of the fluid ejection ports formed of the long holes 191, the fluid can be discharged from the leak path directly through the overlapping region.
  • the sealing abutting end 176 is pressed into the sealing member 174, and the gap between them is closed.
  • an abnormally strong tensile force is applied between the pair of the coupling bodies 171 and 172 in directions of axially separating the coupling bodies 171 and 172 from each other, and this strong tensile force is also applied to the coupling part 180 which couples the pair of the coupling bodies 171 and 172 together.
  • the fluid is spouted from the leak path to the outside through the fluid ejection ports consisted of the long holes 191.
  • the fluid pressure within the fluid passage rapidly decreases, the tensile force acting in directions of axially separating the pair of the coupling bodies 171 and 172 decreases, accordingly, and breakage or damage of the coupling portion 183 and the like can be prevented beforehand.
  • the supervisor and the like are warned of the abnormality.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Safety Valves (AREA)
EP14898922.1A 2014-07-29 2014-07-29 Raccord d'accouplement à fonction de soupape de sûreté Active EP3176485B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14898922T PL3176485T3 (pl) 2014-07-29 2014-07-29 Złączka montażowa z funkcją zaworu bezpieczeństwa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/069959 WO2016016951A1 (fr) 2014-07-29 2014-07-29 Raccord d'accouplement à fonction de soupape de sûreté

Publications (3)

Publication Number Publication Date
EP3176485A1 true EP3176485A1 (fr) 2017-06-07
EP3176485A4 EP3176485A4 (fr) 2018-01-10
EP3176485B1 EP3176485B1 (fr) 2018-12-19

Family

ID=54477743

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14898922.1A Active EP3176485B1 (fr) 2014-07-29 2014-07-29 Raccord d'accouplement à fonction de soupape de sûreté
EP15827049.6A Active EP3176486B1 (fr) 2014-07-29 2015-07-28 Accessoire d'accouplement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15827049.6A Active EP3176486B1 (fr) 2014-07-29 2015-07-28 Accessoire d'accouplement

Country Status (9)

Country Link
US (2) US9879809B2 (fr)
EP (2) EP3176485B1 (fr)
JP (2) JP5801979B1 (fr)
CN (2) CN107002930B (fr)
CA (2) CA2956774C (fr)
DK (2) DK3176485T3 (fr)
ES (2) ES2717924T3 (fr)
PL (2) PL3176485T3 (fr)
WO (2) WO2016016951A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK3176485T3 (en) 2014-07-29 2019-03-18 Sakura Rubber CLUTCH FITTING WITH SAFETY VALVE FUNCTION
WO2018159805A1 (fr) 2017-03-03 2018-09-07 国立大学法人京都大学 Méthode de production de cellules progénitrices pancréatiques
EP3650737B1 (fr) * 2017-07-04 2024-12-04 Nippon Pillar Packing Co., Ltd. Structure de raccordement pour dispositif à fluide
DE202018001710U1 (de) * 2018-04-03 2018-06-12 Hytrans Beheer B.V. Kupplungsteil und damit ausgestattete Schlauchkupplung, ausgelegt für die Kupplung eines Schlauchs oder Schlauchteils
KR102654568B1 (ko) * 2018-10-01 2024-04-03 현대자동차주식회사 공압 회로용 커넥터
KR102107701B1 (ko) * 2018-12-13 2020-05-07 경기도 가스 주입 장치
US11067464B2 (en) 2019-01-18 2021-07-20 Mueller International, Llc Wet barrel hydrant with pressure monitoring and leak detection
US11313748B2 (en) 2019-01-18 2022-04-26 Mueller International, Llc Pressure monitor housing with cap-engaging projection
US11173436B2 (en) * 2020-02-20 2021-11-16 Pall Corporation Connector assembly, filter assembly, filter device, and method of use
JP7030925B1 (ja) 2020-10-09 2022-03-07 櫻護謨株式会社 結合構造
US20230399607A1 (en) 2020-11-20 2023-12-14 Orizuru Therapeutics, Inc. Maturation agent
US20240318141A1 (en) 2021-02-09 2024-09-26 Orizuru Therapeutics, Inc. Maturation agent
CA3253987A1 (fr) 2022-04-25 2025-07-04 Orizuru Therapeutics Inc Agent de maturation présentant à la fois une activité inhibitrice d'alk5 et une activité inhibitrice de cdk8/19
EP4556555A1 (fr) 2022-07-14 2025-05-21 Orizuru Therapeutics, Inc. Gel de fibrine en feuille pour transplantation de cellule
JP2024095445A (ja) * 2022-12-28 2024-07-10 ニデック株式会社 接続部材および接続ユニット

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US380363A (en) * 1888-04-03 Pipe or hose coupling
US813235A (en) * 1905-02-10 1906-02-20 William J Pine Steam-pipe coupling.
US894900A (en) * 1907-10-31 1908-08-04 William Pohlman Coupling for hose and pipe.
US1217041A (en) * 1916-04-07 1917-02-20 Randolph N Martz Coupling for hose and pipes.
JPS63106990A (ja) 1986-10-24 1988-05-12 Hitachi Ltd スタテイツク型ｒａｍ
JPS63106990U (fr) * 1986-12-26 1988-07-11
JP2550612B2 (ja) 1987-10-19 1996-11-06 ダイキン工業株式会社 スクロール形圧縮機の容量制御機構
JP3107507B2 (ja) * 1995-10-24 2000-11-13 櫻護謨株式会社 ホースの結合金具
JPH1038153A (ja) * 1996-07-25 1998-02-13 Sakura Gomme Kk ホースの結合金具
AU4573397A (en) * 1997-10-16 1999-05-10 Sakura Rubber Co., Ltd. Joint and method of manufacturing the same
JP2002009477A (ja) 2000-06-19 2002-01-11 Aisin Aw Co Ltd 電動機制御用パワーモジュール冷却装置
JP4620227B2 (ja) * 2000-07-26 2011-01-26 櫻護謨株式会社 結合金具
JP4601780B2 (ja) * 2000-07-26 2010-12-22 櫻護謨株式会社 ホースの結合金具
JP4659302B2 (ja) * 2001-09-14 2011-03-30 櫻護謨株式会社 配管類の結合金具
CA2478532C (fr) * 2002-03-05 2009-12-22 Sakura Rubber Co., Ltd. Dispositif de connexion equipe d'une structure evitant le desserrage
JP3971421B2 (ja) * 2004-12-06 2007-09-05 櫻護謨株式会社 ホースの結合金具
JP4834423B2 (ja) * 2006-03-03 2011-12-14 櫻護謨株式会社 安全機構付き接続金具及び送水ホース
EP2075497B1 (fr) 2006-10-11 2015-09-02 Sakura Rubber Co., Ltd. Dispositif de couplage
US20080284163A1 (en) * 2007-05-15 2008-11-20 Millipore Corporation Connector for flexible tubing
JP4445987B2 (ja) * 2007-09-06 2010-04-07 日本ピラー工業株式会社 流体機器と継手との接続構造
CN104685282B (zh) 2012-06-21 2017-02-22 菲斯卡公司 快速连接和快速断开系统及操纵快速连接和快速断开系统的方法
DK3176485T3 (en) 2014-07-29 2019-03-18 Sakura Rubber CLUTCH FITTING WITH SAFETY VALVE FUNCTION

Also Published As

Publication number Publication date
JPWO2016016951A1 (ja) 2017-04-27
JPWO2016017652A1 (ja) 2017-04-27
EP3176486A4 (fr) 2018-04-25
CA2956665C (fr) 2018-01-02
US20170138521A1 (en) 2017-05-18
EP3176485B1 (fr) 2018-12-19
CA2956665A1 (fr) 2016-02-04
US10107435B2 (en) 2018-10-23
EP3176486B1 (fr) 2019-12-04
EP3176485A4 (fr) 2018-01-10
JP5801979B1 (ja) 2015-10-28
DK3176485T3 (en) 2019-03-18
CN107002930B (zh) 2019-06-11
CA2956774C (fr) 2018-01-02
WO2016017652A1 (fr) 2016-02-04
CN107076343A (zh) 2017-08-18
EP3176486A1 (fr) 2017-06-07
ES2769199T3 (es) 2020-06-25
JP5982599B2 (ja) 2016-08-31
DK3176486T3 (da) 2020-02-24
PL3176486T3 (pl) 2020-06-01
CA2956774A1 (fr) 2016-02-04
CN107002930A (zh) 2017-08-01
ES2717924T3 (es) 2019-06-26
US20170138520A1 (en) 2017-05-18
CN107076343B (zh) 2018-11-30
PL3176485T3 (pl) 2019-06-28
WO2016016951A1 (fr) 2016-02-04
US9879809B2 (en) 2018-01-30

Similar Documents

Publication Publication Date Title
EP3176485B1 (fr) Raccord d'accouplement à fonction de soupape de sûreté
US8800586B2 (en) Fluid conduit safety system with separable coupling
CA2986101C (fr) Raccord cassable
US6260569B1 (en) Safety system for fluid conduit
US12188602B1 (en) Sealing plug assemblies, line stop assemblies, and yokes with fluid pathways for line stopping a pipe and methods for the use thereof
JP2016031150A (ja) 結合金具
WO2015002742A1 (fr) Système de découpe d'une pièce de travail et procédé correspondant
AU2015326453A1 (en) Fluid supply apparatus
JP2017062006A (ja) 結合金具
JP2007232178A (ja) 安全機構付き接続金具及び送水ホース
US10221984B2 (en) High-pressure cryogenic fluid conduit
EP3011217B1 (fr) Conduit de fluide à haute pression
US11320081B1 (en) Method and apparatus for disconnection of hoses and other conduits
US9121536B2 (en) High-pressure fluid conduit

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

17P Request for examination filed

Effective date: 20170227

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

DAX Request for extension of the european patent (deleted)
RIC1 Information provided on ipc code assigned before grant

Ipc: F16L 37/24 20060101AFI20171114BHEP

Ipc: F16L 55/07 20060101ALI20171114BHEP

Ipc: F16K 17/02 20060101ALI20171114BHEP

A4 Supplementary search report drawn up and despatched

Effective date: 20171213

RIC1 Information provided on ipc code assigned before grant

Ipc: F16L 37/24 20060101AFI20171207BHEP

Ipc: F16L 55/07 20060101ALI20171207BHEP

Ipc: F16L 19/025 20060101ALI20171207BHEP

Ipc: F16L 37/252 20060101ALI20171207BHEP

Ipc: A62C 33/00 20060101ALI20171207BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: F16K 17/04 20060101ALI20180614BHEP

Ipc: F16L 37/252 20060101ALI20180614BHEP

Ipc: F16L 37/24 20060101AFI20180614BHEP

Ipc: F16K 17/02 20060101ALI20180614BHEP

Ipc: F16L 55/07 20060101ALI20180614BHEP

Ipc: A62C 33/00 20060101ALI20180614BHEP

Ipc: F16L 19/025 20060101ALI20180614BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180723

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1079108

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014038436

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20190311

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190319

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20181219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190320

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2717924

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20190626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190419

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014038436

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20190920

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1079108

Country of ref document: AT

Kind code of ref document: T

Effective date: 20181219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181219

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20250610

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20250620

Year of fee payment: 12

Ref country code: DK

Payment date: 20250612

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NO

Payment date: 20250620

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20250617

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20250619

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20250613

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20250710

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20250801

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250729

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20250627

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20250728

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20250722

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20250801

Year of fee payment: 12